function updateCheckBoxListStatus(key, ctlID, hdnCtlID) {
    
    var hdnControl = document.getElementById(hdnCtlID);
    if (hdnControl.value == "")
        hdnControl.value = ",";
    if (document.getElementById(ctlID).checked) {
        hdnControl.value = hdnControl.value + key + ",";
    }
    else {

        hdnControl.value = hdnControl.value.replace("," + key + ",", ",");
    }
    
    if (hdnControl.value == ",")
        hdnControl.value = "";
    
    
  //alert(hdnControl.value);
}

function validateEmail(buttonId,divId) {

  var re = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
  if (document.getElementById(buttonId).value.search(re) > -1) {
      document.getElementById(divId).style.display = "none";
        return true;
    } else {
    document.getElementById(divId).style.display = "block";
    return false;
    }

}

function clearTextbox() {
    if (document.getElementById('SignupEmailID').value == 'E-Mail')
        document.getElementById('SignupEmailID').value = ''; 
}


function defaultTextbox() {
    if (document.getElementById('SignupEmailID').value == '')
        document.getElementById('SignupEmailID').value = 'E-Mail';
}